Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Top Tier Detergent Gasoline (Deposits, Fuel Economy, No Start, Power, Performance, Stall Concerns) - U.S. Only (04-06-04-047L)
Reference number: 04-06-04-047L
Supersedes refnos: 04-06-04-047, 04-06-04-047A, 04-06-04-047B, 04-06-04-047C, 04-06-04-047D, 04-06-04-047E, 04-06-04-047F, 04-06-04-047G, 04-06-04-047H, 04-06-04-047I, 04-06-04-047K
TOP TIER DETERGENT GASOLINE (DEPOSITS, FUEL ECONOMY, NO START, POWER, PERFORMANCE, STALL CONCERNS) - U.S. ONLY
TECHNICAL SERVICE BULLETIN
| Affected Model(s): | 2014 and Prior GM Passenger Cars and Trucks (U.S. Only) |
| Supercedes: | This bulletin has been revised to add the 2014 model year. Please discard Corporate Bulletin Number 04-06-04-047K. In Canada, refer to the latest version of Corporate Bulletin Number 05-06-04-022. |
SERVICE INFORMATION
A new class of fuel called TOP TIER Detergent Gasoline is appearing at retail stations of some fuel marketers. This gasoline meets detergency standards developed by six automotive companies. All vehicles will benefit from using TOP TIER Detergent Gasoline over gasoline containing the "Lowest Additive Concentration" set by the EPA. Those vehicles that have experienced deposit related concerns may especially benefit from the use of TOP TIER Detergent Gasoline.
- Intake valve: 10,000 miles with TOP TIER Detergent Gasoline
- Intake valve: 10,000 miles with Legal Minimum additive
Gasoline Brands (U.S.) That Currently Meet TOP TIER Detergent Gasoline Standards
As of July 1, 2012, all grades of the following gasoline brands meet the TOP TIER Detergent Gasoline Standards:
- 76 Stations
- Aloha Petroleum
- Chevron
- Conoco
- CountryMark
- Entec Stations
- Exxon
- Hawaii Fueling Network (HFN)
- Holiday Stationstores Inc.
- Kwik Trip Kwik Star
- MFA Oil Co.
- Mileage Stations
- Mobil
- Ohana Fuels
- Phillips 66
- Quick Trip
- Rebel Oil
- Road Ranger
- Severson Oil
- Shell
- Texaco
- Tri-Par Oil Co.
- U.S. Oil
What is TOP TIER Detergent Gasoline?
TOP TIER Detergent Gasoline is a new class of gasoline with enhanced detergency. It meets new, voluntary deposit control standards developed by six automotive companies that exceed the detergent requirements imposed by the EPA.
Where Can TOP TIER Detergent Gasoline Be Purchased?
The TOP TIER program began on May 3, 2004 and many fuel marketers have joined the program and have introduced TOP TIER Detergent Gasoline. This is a voluntary program and not all fuel marketers will offer this product. Once fuel marketers make public announcements, they will appear on a list of brands that meet the TOP TIER standards.
Where Can I find the Latest Information on TOP TIER Fuel and Retailers?
On the web, please visit www.toptiergas.com for additional information and updated retailer lists.
Who developed TOP TIER Detergent Gasoline standards?
TOP TIER Detergent Gasoline standards were developed by six automotive companies: Audi, BMW, General Motors, Honda, Toyota and Volkswagen.
Why was TOP TIER Detergent Gasoline developed?
TOP TIER Detergent Gasoline was developed to increase the level of detergent additive in gasoline. The EPA requires that all gasoline sold in the U.S. contain a detergent additive. However, the requirement is minimal and in many cases, is not sufficient to keep engines clean. In order to meet TOP TIER Detergent Gasoline standards, a higher level of detergent is needed than what is required by the EPA. Also, TOP TIER was developed to give fuel marketers the opportunity to differentiate their product.
Why did the six automotive companies join together to develop TOP TIER?
All six corporations recognized the benefits to both the vehicle and the consumer. Also, joining together emphasized that low detergency is an issue of concern to several automotive companies.
What are the benefits of TOP TIER Detergent Gasoline?
TOP TIER Detergent Gasoline will help keep engines cleaner than gasoline containing the "Lowest Additive Concentration" set by the EPA. Clean engines help provide optimal fuel economy and performance and reduced emissions. Also, use of TOP TIER Detergent Gasoline will help reduce deposit related concerns.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.